Fix for #6: Incorrect bolt lengths #13
@ -705,6 +705,7 @@ def Create_Pan_Head(HOLE_DIA, HEAD_DIA, SHANK_DIA, HEIGHT, RAD1, RAD2, FACE_OFFS
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verts.append([SHANK_RADIUS, 0.0, (0.0 - HEIGHT)])
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Row += 1
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washer_face_z = Start_Height - HEIGHT
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verts.append([SHANK_RADIUS, 0.0, (0.0 - HEIGHT) - Start_Height])
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Row += 1
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@ -716,7 +717,7 @@ def Create_Pan_Head(HOLE_DIA, HEAD_DIA, SHANK_DIA, HEIGHT, RAD1, RAD2, FACE_OFFS
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# Global_Head_Height = HEIGHT # UNUSED
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return Move_Verts_Up_Z(sVerts, Start_Height), faces, HEIGHT
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return Move_Verts_Up_Z(sVerts, Start_Height), faces, HEIGHT, washer_face_z
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def Create_Dome_Head(HOLE_DIA, HEAD_DIA, SHANK_DIA, HEIGHT, RAD1, RAD2, FACE_OFFSET, DIV_COUNT):
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@ -843,6 +844,8 @@ def Create_Cap_Head(HOLE_DIA, HEAD_DIA, SHANK_DIA, HEIGHT, RAD1, RAD2, DIV_COUNT
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verts.append([HEAD_RADIUS - BEVEL, 0.0, 0.0 - HEIGHT])
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Row += 1
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washer_face_z = -HEIGHT
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# rad2
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for i in range(0, 100, 10):
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x = sin(radians(i)) * RAD2
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@ -855,7 +858,7 @@ def Create_Cap_Head(HOLE_DIA, HEAD_DIA, SHANK_DIA, HEIGHT, RAD1, RAD2, DIV_COUNT
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faces.extend(Build_Face_List_Quads(FaceStart, Row - 1, DIV_COUNT))
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return sVerts, faces, HEIGHT + RAD2
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return sVerts, faces, HEIGHT + RAD2, washer_face_z
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def Create_Hex_Head(FLAT, HOLE_DIA, SHANK_DIA, HEIGHT):
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@ -868,6 +871,7 @@ def Create_Hex_Head(FLAT, HOLE_DIA, SHANK_DIA, HEIGHT):
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Undercut_Height = (Half_Flat * (0.05 / 8))
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Shank_Bevel = (Half_Flat * (0.05 / 8))
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Flat_Height = HEIGHT - Undercut_Height - Shank_Bevel
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washer_face_z = -HEIGHT + Undercut_Height
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# Undercut_Height = 5
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SHANK_RADIUS = SHANK_DIA / 2
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Row = 0
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@ -927,7 +931,6 @@ def Create_Hex_Head(FLAT, HOLE_DIA, SHANK_DIA, HEIGHT):
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x = tan(radians(60 / 3)) * Half_Flat
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dvec = vec3 - Vector([x, Half_Flat, 0.0])
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Lowest_Point = -dvec.length
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verts.append([x, Half_Flat, -dvec.length])
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x = tan(radians(60 / 2)) * Half_Flat
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@ -1061,7 +1064,7 @@ def Create_Hex_Head(FLAT, HOLE_DIA, SHANK_DIA, HEIGHT):
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Spin_Verts, Spin_Faces = SpinDup(verts, faces, 360, 6, 'z')
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return Spin_Verts, Spin_Faces, 0 - (-HEIGHT)
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return Spin_Verts, Spin_Faces, 0 - (-HEIGHT), washer_face_z
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def Create_12_Point(FLAT, HOLE_DIA, SHANK_DIA, HEIGHT, FLANGE_DIA):
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@ -2385,13 +2388,16 @@ def Bolt_Mesh(props, context):
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props.bf_Philips_Bit_Dia / GLOBAL_SCALE * (0.5 / 1.82),
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props.bf_Phillips_Bit_Depth / GLOBAL_SCALE
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)
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# Head Mesh
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# Define the washer face of the bolt, i.e. the underside. Some bolts have a bevel or radius to the shank included
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# Their head height causes an incorrect shank/thread length determination.
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washer_face_z = 0 # z-axis height, some Heads return a variable that overwrites this
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if props.bf_Head_Type == 'bf_Head_Hex':
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Head_Verts, Head_Faces, Head_Height = Create_Hex_Head(
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Head_Verts, Head_Faces, Head_Height, washer_face_z = Create_Hex_Head(
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props.bf_Hex_Head_Flat_Distance / GLOBAL_SCALE, Bit_Dia,
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props.bf_Shank_Dia / GLOBAL_SCALE, props.bf_Hex_Head_Height / GLOBAL_SCALE
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)
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elif props.bf_Head_Type == 'bf_Head_12Pnt':
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Head_Verts, Head_Faces, Head_Height = Create_12_Point_Head(
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props.bf_12_Point_Head_Flat_Distance / GLOBAL_SCALE, Bit_Dia,
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@ -2400,7 +2406,7 @@ def Bolt_Mesh(props, context):
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max(props.bf_12_Point_Head_Flange_Dia / GLOBAL_SCALE, props.bf_12_Point_Head_Flat_Distance / GLOBAL_SCALE)
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)
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elif props.bf_Head_Type == 'bf_Head_Cap':
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Head_Verts, Head_Faces, Head_Height = Create_Cap_Head(
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Head_Verts, Head_Faces, Head_Height, washer_face_z = Create_Cap_Head(
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Bit_Dia, props.bf_Cap_Head_Dia / GLOBAL_SCALE,
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props.bf_Shank_Dia / GLOBAL_SCALE, props.bf_Cap_Head_Height / GLOBAL_SCALE,
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props.bf_Cap_Head_Dia / GLOBAL_SCALE * (1.0 / 19.0),
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@ -2413,9 +2419,8 @@ def Bolt_Mesh(props, context):
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props.bf_Shank_Dia / GLOBAL_SCALE, props.bf_Hex_Head_Height / GLOBAL_SCALE,
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1, 1, 0, props.bf_Div_Count
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)
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elif props.bf_Head_Type == 'bf_Head_Pan':
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Head_Verts, Head_Faces, Head_Height = Create_Pan_Head(
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Head_Verts, Head_Faces, Head_Height, washer_face_z = Create_Pan_Head(
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Bit_Dia, props.bf_Pan_Head_Dia / GLOBAL_SCALE,
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props.bf_Shank_Dia / GLOBAL_SCALE,
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props.bf_Hex_Head_Height / GLOBAL_SCALE, 1, 1, 0,
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@ -2437,11 +2442,24 @@ def Bolt_Mesh(props, context):
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verts.extend(Move_Verts_Up_Z(Head_Verts, Head_Height))
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faces.extend(Copy_Faces(Head_Faces, Face_Start))
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make_shank = (props.bf_Shank_Length / GLOBAL_SCALE)
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make_thread = (props.bf_Thread_Length / GLOBAL_SCALE)
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if washer_face_z != 0:
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# At this point the mesh is back at z=zero. The washer face may be randomly above this depending on
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# the head choice. Optional returned variable is used to shorten up the shank/thread.
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# If the Head function modified the washer_face-z we are here to make a length correction.
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washer_face = washer_face_z + Head_Height
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make_shank = (props.bf_Shank_Length / GLOBAL_SCALE) - washer_face
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if make_shank < 0:
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# If all the shank length is used up then take it off the thread length
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make_thread = (props.bf_Thread_Length / GLOBAL_SCALE) + make_shank
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make_shank = 0
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Face_Start = len(verts)
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Thread_Verts, Thread_Faces, Thread_Height = Create_External_Thread(
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props.bf_Shank_Dia / GLOBAL_SCALE, props.bf_Shank_Length / GLOBAL_SCALE,
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props.bf_Shank_Dia / GLOBAL_SCALE, make_shank,
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props.bf_Minor_Dia / GLOBAL_SCALE, props.bf_Major_Dia / GLOBAL_SCALE,
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props.bf_Pitch / GLOBAL_SCALE, props.bf_Thread_Length / GLOBAL_SCALE,
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props.bf_Pitch / GLOBAL_SCALE, make_thread,
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props.bf_Crest_Percent,
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props.bf_Root_Percent, props.bf_Div_Count
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)
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